Replacement link



Sept. 22, 1931. J. O'F. CLARK REPLACEMENT LINK Filed April 20, 1951 7 lspreading of the members Patented Sept. 22, 1931 UNITED orrics JOHNOFALLON CLARK, or UNIvEnsI'rY-cIrY, MIssonnI, assrelron. 'ro AMERICAN"MANGANESE STEEL COMPANY, or orrrcAeq rrimnorsn CORPORATION, OF'MAINEnErLAcEMENr max I Application filed April 20,

This invention relates to links which, for the purpose of adapting themto be introduced into a chain orotherwise connected with existing openstructural elements, are

5 composed of two link members, separable in a cleavage plane, andhaving each an opening in its side admitting the element to which it isto be connected; and especially to that sub-class of cleavage links inwhich the plane 10 of separation involves the side members as well asthe end members of the link, and the spaced ends which define theopening in each link member are anchored upon the solid side of thecomplementary link member to resist cident to their use. p

The object of the present invention is to provide animproved'construction of links of this kind, and particularly aconstruction in which the anchorage of the ends of the members willsecure them more firmly against relative movement, besides being of adesign which can be finished by grinding and therefore adapted forsuccessful production from manganese steel or other alloy calling forthe use of the grinder in finishing. "And to these j ends, the inventionconsists in forming upon the solid or continuous side of each linkmember a boss or enlargementwhich fills the openso ing of thecomplementary link member when the two members are assembled and,adjacent this filler and ateither end thereof, a T'shaped recess or seatin the cleavage plane of the link, with the head of the T extendingentirely across the link member at the end of the filler, transverselyto the direction of tension when the link is in service, while the stemof the T is longitudinal to the direction of tension, and forming uponthe ends which 40 define the opening in each member, T-shaped anchorsadapted to enter the said recesses and, by engagement with shouldersthat define the recesses, interlock firmly against relative movement inthe cleavageplane either transversely to or in the direction of the lineof tension imposed upon the link when in use. Such a form of interlockcan be finished by grinding in a manner to insure firm seating; and thetwo link members, when constructed so as described, are adapted to beheld in assemrecesfses."

under tension in- 'rially'less thickness than the continuous sidesimilarly designed 1931. Serial no, 531,370.

plane 'of cleavage, some of the'rivets being closely associat'ed withthe T-shaped' anchoring connectionsso asto prevent the T-shaped anchorsfrom drawing out of the T-shaped In the accompanying drawin'gs IFigures'l'and 2represcnt, respectively, the inner and outer faces of alink member, or two identical link'inembers constructed in accordancewith thepresent invention and adapted for assembly-in a cleavage planewhich includes both side's'and both ends of the link.

Figure 3 is-an end view of'the member shown in Figure 1, and alsoconstitutes an end view of the membershownin Figure 2 if inverted; I c

Figure 4' is aside view of either of the members shown in Figures 1, 2and3, looking toward the side of the link member in which the opening ismade, and "which, in the preferred form'of'the invention, is of mateofthe 'link member. o

Figure 5 is a section' on th Figur'e'1;andf Figure-6 isa persp line5w-+5a; of

"ective view showingtwo complementary link membersassembled to form acomplete link. The 'two' complementary "link members A and Barepreferably identical in designand, as shown'more'clearly'in Figures 3, 4and 6,

these members separate upon a plane of cleavage C which,'whileincludingboth sides andboth ends of the link, is at such a substantial angle tothe general plane 'ofthe' link that it leaves the solid or continuousside 1 of the link with the major thickness of the linkjmember and theside containing theopening2 with a minor thickness. Openings?oft-hemembers A, B, are defined by T-shapedanchors 3, the heads 4 ofwhichextendtransversely of thedirection of :tension imposed upon thelinkwhen in use, while reduced shanks ornecks 5 of said an chors extendapproximately in the direction of such tension. The continuous sides 1of thelink members are formed 'with lugs or bosses 6- designed toenter'and fill thespace ea longitudinally ofandtransverselytothe-=tension which the link encounters in usnrso longas the link members are held against separation; and this, withtheapresent,construction of link, may be conveniently realized byintroducingzordinarynrivetsthrough therop'e rings 9, each-ref whinhzissufficiently-neurone 0f the anchors 3: to -.-preven tzit;if1rom rbeingdrawn out-rorizthe recess-in which-it. is seated.

- Animportant:advantagerofirthei particular form- 20 anchorage herein{shown 'andLdescribed is that it admits of dressing the workp ece byhe-grinder, whichinrtum renders it .practicahle to producenth link frommanjacent to the fillers are plane and unobstructed, and the linkmembers have rivet holes extending through them in directionsintersecting the cleavage plane and in positions which bring a rivet inclose proximity to the shank of each Trshapecl anchor. igignedgatStiLouis,Missouriothis 8th day of April, 1931.

JOHN OFALLON CLARK.

economically mac;h;ined. 1; constructed 3511 6 911 Cle Qf-TbQdwIS veryrigid in use, :under the-load imposed-,z-iarlditheare- .sistanclet0;deflectionaisridentical inebothilink r miembers since the dimensions.jofrthe 'two nnembersare-alike Ettz'tl'lQjPOiDl? avhere theadaeentlinks comeintofloeaning-whenathe link is under tension, namely, in theplane inolildling theanajor axis otthe ink andperpendica .niembers beingconstructed with (111188113. .for

anchoring the =ends of "the complementary link (adjacent sitstsaidfi-ller-;--,said anchoring ,meanswomprisi-ng two Teshapedi-reeesses oneach 1 link. member -lyingsubstantially-sin: Lthe plane "of cleavage,with thechead of-ieach re- :cess extending-transversely across amend- 0f.1 the. fillerandthe--necks ofithemecesses, extending longitudinally ofthe link, :andetwo: anchors constituti=ng confines of-the1side1openiingojf thememben'and; termed with T heads entering the transverseportions-10f:thereoesses and .wvith. shanksentering the --necks ithereofand the confines ofthe T+shaped recesses lcomprising shoulderilugsagainst which saidr-anchors abut longitudinally, and1aterally-iundenforces tending toEdisplace the anchors 2. Ailink-rasdescribed .inlclaim 1,1in which i the .faces of the ends; of :the. linkmemsbers-x through ;.which:.they: meetzthe: faces ad-

